Faroe Islands pulled off one of the biggest shocks in international football when they won 1-0 in Greece on Friday.
The win in Athens is easily their greatest victory on the world stage, but their success in European Championship qualifying group F piles on the misery for Greece boss Claudio Ranieri.
Since joining competitive international football in 1990, the Faroes had only ever won four away games -- against fellow minnows Luxembourg, Malta and San Marino. But now they can toast victory against a nation who just 10 years ago were crowned European champions.
This was just their 20th win and their first competitive one since 2011. Their last competitive away win came in 2001 against Luxembourg.
Joan Edmundsson's 61st-minute goal stunned the home side, and Ranieri will do well to survive such a ghastly result.
Former Fulham and West Brom midfielder Zoltan Gera headed Hungary to a 1-0 victory over Finland in the same group.
The match looked to be heading to a draw until the 35-year-old scored the goal which claimed Hungary's second win of the group stages in the 84th minute.
Northern Ireland's perfect start came crashing down in Romania after Paul Papp ended their brave resistance with a second-half brace to secure a 2-0 win.
Despite taking maximum points from their first three matches, including away wins in Hungary and Greece, Michael O'Neill's men were under siege for the entirety of the encounter.
Yet their backs-to-the-wall defence looked as though it would yield a vital draw until right-back Papp struck in the 74th and 79th minutes to seal a 2-0 win for the new Group F leaders.
Romania sit top on 10 points, with Northern Ireland on nine, Hungary on seven and Finland four.
Scotland confirmed their 2016 European Championship qualifying credentials with a hard-fought 1-0 win over Republic of Ireland thanks to a wonderful second-half strike by Shaun Maloney
Gordon Strachan's side had the best of a tense, frenetic first-half at Celtic Park but passed up a couple of good chances to take the lead.
The visitors came out rejuvenated after the break but Scotland regained control with Wigan forward Maloney curling the ball past David Forde in the 75th minute with technique fit to win any game.
Germany picked up their obligatory group win over Gibraltar but the expected flurry of goals failed to arrive as they only managed to win 4-0 in Nuremberg.
Thomas Muller was on target twice with Mario Gotze raising Germany's lead to three before half-time. An own goal from Yogan Santos midway through the second half made it four but World Cup winners Germany were unable to add any more.
Temur Ketsbaia's reign as Georgia coach looked to have ended after Group B leaders Poland romped to a 4-0 victory in Tbilisi.
Ketsbaia declared he would resign no matter what the final outcome at the Dinamo Arena, after just one win in their opening matches left Georgia with little hope of qualification.
Poland, though, remain very much on course for booking a place for the finals in France, having defeated World Cup-winners Germany in their last outing.
The visitors made the breakthrough at the start of the second half, when Kamil Glik headed in from a corner, before two goals in as many minutes from Grzegorz Krychowiak and Sebastian Mila ended any hopes of a comeback.
Arkadiusz Milik added a fourth in stopage time, which appeared to back up the post-match claim of Ketsbaia, appointed to the job in November 2009, that "Georgian football is dead."
Scotland go level on seven points with Ireland and Germany, with Poland Group D leaders with 10, but there are surely twists and turns still to come before the two automatic qualifying spots and the play-off place is secured.
Cristiano Ronaldo became the record goalscorer in European Championship football as Portugal beat Armenia 1-0 in Faro.
The Real Madrid forward took his tally in qualifying and tournament matches to 23, passing Denmark's Jon Dahl Tomasson's total with a close-range finish on 71 minutes.
The victory sees Fernando Santos's side get their Group I campaign back on track to move a point behind Denmark, who won 3-1 in Serbia, but have played one match more.
A draw against Albania and defeat against Portugal had raised questions about Denmark's performances, and the absence of Lasse Schone and captain Daniel Agger through injury only increased Olsen's problems going into a tricky away trip.
When Serbia took a fourth-minute lead through Zoran Tosic, those problems intensified. But Denmark made a determined response and two goals in the space of three minutes flipped the game on its head as Nicklas Bendtner levelled and Simon Kjaer headed them in front in the 63rd minute. Bendtner then wrapped things up with a third goal with five minutes remaining.